“And it’s very difficult to be sure that the so-called ‘without aluminium’ brands really are without.”

The oncologist added that he’d like to see aluminium salts banned in the same way asbestos was, but he expects the cosmetics industry to resist this.

“Now the fight will begin. They will act like the tobacco industry and say that proof in human beings is lacking,” he said.

But in a statement given to The Huffington Post UK, Baroness Delyth Morgan, chief executive at Breast Cancer Now, said women should not alter their deodorant use.

“This study looks specifically at mouse cells grown in the lab and in mice and we need to put its findings in the context of previous research looking at human breast cancer,” she said.

“Studies investigating antiperspirant or deodorant use in women have consistently shown no good evidence of a link to breast cancer. With the current evidence, there is no reason for women to be concerned about using them on account of their breast cancer risk.

“There are, however, established ways that all women can help reduce their risk of the disease, including cutting down on alcohol intake, maintaining a healthy weight and getting regular exercise.”

According to Science Media Centre, Professor Paul Pharoah of the University of Cambridge also said women should not be too concerned by the study.

“This study shows that aluminium chloride, a chemical that is a main ingredient of many antiperspirants, can turn normal mouse breast epithelial cells into cancer cells when grown artificially in a culture dish. However, when injected into live mice aluminium chloride only caused cancer in a strain of mice that also had a severe deficiency of the immune system,” he pointed out.

“Injected aluminium chloride did not cause cancer in other more normal strains of mice.

“These results tell us little about the potential for aluminium chloride to cause breast cancer when used normally.”

Due to these limitations, Professor Pharoah said no firm conclusions could be drawn from the study. He added that not all deodorants contain aluminium salts.

Breast Cancer Signs And Treatment

Breast Cancer Signs And Treatment

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What Are The Symptoms?

"A new painless, firm breast lump with irregular margins is a potential symptom of breast cancer," says Dr. Sandhya Pruthi, a breast cancer researcher at the Mayo Clinic. "The cancer diagnosis is confirmed following a biopsy of the lump." She notes that usually, women who are newly diagnosed with breast cancer are healthy and don't feel sick at all.